package dom.domain;

import java.util.List;

import org.hibernate.LockOptions;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.transaction.annotation.Transactional;

/**
 * A data access object (DAO) providing persistence and search support for
 * Examplace entities. Transaction control of the save(), update() and delete()
 * operations can directly support Spring container-managed transactions or they
 * can be augmented to handle user-managed Spring transactions. Each of these
 * methods provides additional information for how to configure it for the
 * desired type of transaction control.
 * 
 * @see dom.domain.Examplace
 * @author MyEclipse Persistence Tools
 */
@Transactional
public class ExamplaceDAO {
	private static final Logger log = LoggerFactory
			.getLogger(ExamplaceDAO.class);
	// property constants
	public static final String EPNAME = "epname";
	public static final String EP_ADDRESS = "epAddress";
	public static final String EP_CLASS_NO = "epClassNo";
	public static final String LIMIT_NO = "limitNo";
	public static final String PROVINCE_ID = "provinceId";
	public static final String ALLOCATED_NO = "allocatedNo";

	private SessionFactory sessionFactory;

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	private Session getCurrentSession() {
		return sessionFactory.getCurrentSession();
	}

	protected void initDao() {
		// do nothing
	}

	public void save(Examplace transientInstance) {
		log.debug("saving Examplace instance");
		try {
			getCurrentSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}
	public List getList(int offset,int pageSize)
	{
		try {
			String queryString = "select * from examplace as model order by model.epId desc";
			Query queryObject = getCurrentSession().createSQLQuery(queryString).addEntity(Examplace.class);
			queryObject.setMaxResults(pageSize); // 每页最多显示几条
			queryObject.setFirstResult((offset - 1) * pageSize); // 每页从第几条记录开始
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}
	
	public void delete(Examplace persistentInstance) {
		log.debug("deleting Examplace instance");
		try {
			getCurrentSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}
	public synchronized boolean update (java.lang.Integer epId)
	{
		Examplace temp = findById(epId);
		if(temp.getAllocatedNo()<temp.getLimitNo())
		{
			temp.setAllocatedNo(temp.getAllocatedNo()+1);
			attachDirty(temp);
			return true;
		}
		return false;
		
	}
	public Examplace findById(java.lang.Integer id) {
		log.debug("getting Examplace instance with id: " + id);
		try {
			Examplace instance = (Examplace) getCurrentSession().get(
					"dom.domain.Examplace", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Examplace instance) {
		log.debug("finding Examplace instance by example");
		try {
			List results = getCurrentSession()
					.createCriteria("dom.domain.Examplace")
					.add(Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Examplace instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Examplace as model where model."
					+ propertyName + "= ?";
			Query queryObject = getCurrentSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByEpname(Object epname) {
		return findByProperty(EPNAME, epname);
	}

	public List findByEpAddress(Object epAddress) {
		return findByProperty(EP_ADDRESS, epAddress);
	}

	public List findByEpClassNo(Object epClassNo) {
		return findByProperty(EP_CLASS_NO, epClassNo);
	}

	public List findByLimitNo(Object limitNo) {
		return findByProperty(LIMIT_NO, limitNo);
	}

	public List findByProvinceId(Object provinceId) {
		return findByProperty(PROVINCE_ID, provinceId);
	}

	public List findByAllocatedNo(Object allocatedNo) {
		return findByProperty(ALLOCATED_NO, allocatedNo);
	}
	public List query(String epname)
	{
		try
		{
			String sql = "from Examplace as a where a.epname like :name";
			Query query = getCurrentSession().createQuery(sql);
			query.setString("name", "%"+epname+"%");
			return query.list();
		}catch(RuntimeException e)
		{
			throw e;
		}
	}
	public long getCount(){

		try
		{
			String queryString = "select count(*) from Examplace";
			Query query = getCurrentSession().createQuery(queryString);
			return ((Long) query.iterate().next()).intValue();
		}catch(RuntimeException e)
		{
			throw e;
		}
	
	}
	public List findAll() {
		log.debug("finding all Examplace instances");
		try {
			String queryString = "from Examplace";
			Query queryObject = getCurrentSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Examplace merge(Examplace detachedInstance) {
		log.debug("merging Examplace instance");
		try {
			Examplace result = (Examplace) getCurrentSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Examplace instance) {
		log.debug("attaching dirty Examplace instance");
		try {
			getCurrentSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Examplace instance) {
		log.debug("attaching clean Examplace instance");
		try {
			getCurrentSession().buildLockRequest(LockOptions.NONE).lock(
					instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static ExamplaceDAO getFromApplicationContext(ApplicationContext ctx) {
		return (ExamplaceDAO) ctx.getBean("ExamplaceDAO");
	}
}